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What is a quartic function with only the two real zeros given? x = -4 and x = -1 A. y = x^4 + 5x^3 + 5x^2 + 5x + 4 B. y = x^4 - 5x^3 - 5x^2 - 5x - 4 C. y = -x^4 + 5x^3 + 5x^2 + 5x + 4 D. y = x^4 + 5x^3 + 5x^2 + 5x - 5

Whitney Matthews

in Mathematics

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Eric Morgan on July 29, 2018

To x+4=0 x+1=0 so that the factors (x+4)(x+1)=0; x^2+5x+4 is a factor. Divide x^4+5x^3+5x^2+4 and you get x^2+1 as the other factor would be your other 2 roots (imaginary)


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